Antiskid device for automobile tires

Abstract

The present invention relates to an antiskid device for mounting on automobile tires, designed to have the form of a segmented plastic envelope. The envelope is composed of tread segments provided with inserted metal spikes, ribs and recesses. Each tread segment provides perforated binding lugs accompanied by appropriate binding elements for interconnection of the tread segments to each other and into an endless form thereof, and for mounting the envelope on a tire. The tread section is characterized by spikes and ribs which are arranged in alternating groups of three spikes and three pairs of ribs. A binding wire, preferably a stranded one is located at the inner side of the envelope and connects the envelope in endless form. Tightening, by outer binding elements of the envelope at the outer side of the tire is made possible by an optionally decorative elastic binding ring and an elastic tightening link.

We claim: 
     
       1. A mounting antiskid device for automobile tires comprising: a segmented plastic envelope composed of tread segments of an elastomer, each of said tread segments having a sheet base including an internal surface and an external surface,   metal spikes inserted in said tread segments,   perforated binding lugs provided on opposite longitudinal sides of each tread segment,   groups of three pairs of ribs on said external surface of said sheet base of each tread segment and projecting therefrom,   groups of three spikes, wherein the ribs and spikes are arranged in alternating cquidistant groups of ribs and spikes, each sheet base including recesses in the external surface of the sheet base to intensify roughness of a pattern of the tread, and   an assembly of ribs at each end of tread segment terminating a tread pattern provided by each tread segment.   
     
     
       2. The device of claim 1, including intermediate binding lugs of the envelope which provide inner and outer intermediate binding elements and pairs of neighboring inner and outer end binding lugs which are interconnected by inner and outer end binding elements. 
     
     
       3. The device of claim 2, wherein an outer front border of the envelope, formed by a plurality of said longitudinal sides, is strengthened by at least one of an elastic binding ring and an elastic tightening link, and an inner back border thereof is strengthened by a binding wire provided with connecting ears. 
     
     
       4. The device of claim 1, including first inner and first outer termination binding lugs which provide first inner and first outer termination binding elements and a last inner termination binding lug which provides a last inner termination binding element, a last outer termination binding lug being free prior to being hooked by the first outer termination binding element. 
     
     
       5. The device of claim 4, and further comprising a connecting ear, preferably a single-hole ear, a binding wire, preferably a stranded wire, which is hooked by the first inner termination binding element and another connecting ear, preferably a two-hole ear, of the binding wire which is introduced through all inner intermediate binding elements and inner end binding elements and is hooked by the last inner termination binding element as well as by the first inner termination binding element. 
     
     
       6. The device of claim 3, wherein at least one of the tightening link and the binding ring is hooked by all outer intermediate binding elements, outer end binding elements and a first outer termination binding element.